ReactOS 0.4.15-dev-8428-g6910fa6
getopt.c
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1/*
2 * Copyright (c) 1987 Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * Fri Jun 13 10:39:00 1997, tfelix@fred.net:
34 * Ported to Win32, changed index/rindex to strchr/strrchr
35 */
36
37#include "precomp.h"
38
39#if defined(LIBC_SCCS) && !defined(lint)
40static char sccsid[] = "@(#)getopt.c 4.13 (Berkeley) 2/23/91";
41#endif /* LIBC_SCCS and not lint */
42
43/*
44 * get option letter from argument vector
45 */
46int opterr = 1, /* if error message should be printed */
47 optind = 1, /* index into parent argv vector */
48 optopt; /* character checked for validity */
49const char *optarg; /* argument associated with option */
50
51#define BADCH (int)'?'
52#define EMSG ""
53
54int
55getopt(int nargc, char * const *nargv, const char *ostr)
56{
57 static const char *place = EMSG; /* option letter processing */
58 register char *oli; /* option letter list index */
59 char *p;
60
61 if (!*place) { /* update scanning pointer */
62 if (optind >= nargc || *(place = nargv[optind]) != '-') {
63 place = EMSG;
64 return(EOF);
65 }
66 if (place[1] && *++place == '-') { /* found "--" */
67 ++optind;
68 place = EMSG;
69 return(EOF);
70 }
71 } /* option letter okay? */
72 if ((optopt = (int)*place++) == (int)':' ||
73 !(oli = strchr(ostr, optopt))) {
74 /*
75 * if the user didn't specify '-' as an option,
76 * assume it means EOF.
77 */
78 if (optopt == (int)'-')
79 return(EOF);
80 if (!*place)
81 ++optind;
82 if (opterr) {
83 if (!(p = strrchr(*nargv, '/')))
84 p = *nargv;
85 else
86 ++p;
87 (void)fprintf(stderr, "%s: illegal option -- %c\n",
88 p, optopt);
89 }
90 return(BADCH);
91 }
92 if (*++oli != ':') { /* don't need argument */
93 optarg = NULL;
94 if (!*place)
95 ++optind;
96 }
97 else { /* need an argument */
98 if (*place) /* no white space */
99 optarg = place;
100 else if (nargc <= ++optind) { /* no arg */
101 place = EMSG;
102 if (!(p = strrchr(*nargv, '/')))
103 p = *nargv;
104 else
105 ++p;
106 if (opterr)
108 "%s: option requires an argument -- %c\n",
109 p, optopt);
110 return(BADCH);
111 }
112 else /* white space */
113 optarg = nargv[optind];
114 place = EMSG;
115 ++optind;
116 }
117 return(optopt); /* dump back option letter */
118}
char * strchr(const char *String, int ch)
Definition: utclib.c:501
#define BADCH
Definition: getopt.c:51
int optopt
Definition: getopt.c:48
#define EMSG
Definition: getopt.c:52
int getopt(int nargc, char *const *nargv, const char *ostr)
Definition: getopt.c:55
const char * optarg
Definition: getopt.c:49
int optind
Definition: getopt.c:47
int opterr
Definition: getopt.c:46
static char sccsid[]
Definition: cmds.c:27
#define NULL
Definition: types.h:112
GLfloat GLfloat p
Definition: glext.h:8902
#define EOF
Definition: stdio.h:24
#define stderr
Definition: stdio.h:100
_Check_return_opt_ _CRTIMP int __cdecl fprintf(_Inout_ FILE *_File, _In_z_ _Printf_format_string_ const char *_Format,...)
_Check_return_ _CRTIMP _CONST_RETURN char *__cdecl strrchr(_In_z_ const char *_Str, _In_ int _Ch)
static char * place
Definition: getopt.c:55